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133 Posts

05-14-2014

CA

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M720t not posting... weird noise coming from system board?

2019-08-22, 16:10 PM

Hi Lenovo Community,

 

We have an M720t desktop (Model: 10SQCTO1WW) that is not posting. It's also making an odd noise like a cricket chirping every 10 seconds or so. Me and my co-worker are Lenovo certified technicians.

 

Here's what we have done:

Power supply tested ok.

Removed RAM and the system board made the beep code error there is no memory installed.

Removed video card and tried another one. Also used onboard.

Reset BIOS with jumper, didn't resolve.


I'm inclined to think it's the motherboard, but I wanted to get your opinion first. Also, is there a number we can call to get Lenovo second-level support to help us technicians in a case this? I just find Lenovo's first level support to be worthless to us.

 

Thanks in advance!

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133 Posts

05-14-2014

CA

93 Signins

929 Page Views

  • Posts: 133
  • Registered: ‎05-14-2014
  • Location: CA
  • Views: 929
  • Message 2 of 3

Re: M720t not posting... weird noise coming from system board?

2019-09-10, 12:07 PM
Since evidentally nobody wanted to chime in... it ended up being the system board. After replacing, the desktop worked fine.

0 person found this solution to be helpful.

This helped me too

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3 Posts

09-17-2019

US

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  • Registered: ‎09-17-2019
  • Location: US
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  • Message 3 of 3

Re: M720t not posting... weird noise coming from system board?

2019-09-17, 2:57 AM

I'm wondering if this is my problem? I have a terible noise when on web conference calls. People tell me it souinds like a printing press. I dont hear it unless I go back to our recorded meetings, but it drives my co-workers crazy. They say it sounds like a printing press, typewritter/adding machine... ???? 

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